Inspection - Yamaha RX10K Supplementary Service Manual

CRANKCASE

INSPECTION

1. Inspect:
S Piston wall and cylinder wall
Vertical scratches ! Rebore or replace the
cylinder, and replace the piston and piston
rings as a set.
2. Measure:
S Piston-to-cylinder clearance
Measurement steps:
1st step:
S Measure cylinder bore "C" with the cylinder
bore gauge 1 .
NOTE:
Measure cylinder bore "C" by taking side-to-
side and front-to-back measurements of the
cylinder. Then, find the average of the measure-
ments.
Cylinder bore "C"
Wear limit
Taper limit "T"
Out of round "R"
"C" = maximum of D
"T" = maximum of D
D or D
5 6
"R" = maximum of D
D D or D
2 4 6
S If out of specification, replace the cylinder, and
the piston and piston rings as a set.
5-47
ENG
74.000 X 74.010 mm
(2.9134 X 2.9138 in)
74.06 mm
(2.9157 in)
0.05 mm
(0.0020 in)
0.05 mm
(0.0020 in)
X D
1 6
or D – maximum of
1 2
D or D – maximum of
1 3 5